Machine for burring nuts.



No. 872,189. PATENTED NOV. 26. 1907. E. MONGRAIN.

MACHINE FOR BURRING NUTS.

' APPLICATION FILED MAY 28,1907.

2 SHEETSSHEET l.

No. 872,189. PATENTED NOV. 26, 1907. E. MONGRAIN.

MACHINE FOR BURRING NUTS.

APPLICATION FILED MAY 28, 1907.

2 SHBETS-SHEET 2.

' w s 2 v E W QZZys.

20 I and labor;

UNITED STATES PATENT onruon.

, EDWARD-MONGRAIN, OF EAST ST. LOUIS, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO THOMAS CUNNINGHAM, OF EAST ST. LOUIS, ILLINOIS, AND ONE-FOURTH .TOOHARLES P. BURGESS, OF ST. LOUIS, MISSOURI.

MACHINE FOR BUBRIN'G NUTS.

Specification of Letters Patent.

Patented Nov. 26, 1907.

Application filed May 28. 1907- Serial No. 376.170.

1 drawings, formlng a part hereof.

My invention relates to a machine for re moving theburs formed on the edges of nuts during their manufacture; my object being to construct a simple, compact machine which can be operated with a minimum amount of power, and which will very rapidly perform the work of removing burs from nuts, which work has heretofore been done. by hand, thereby involving much time To the above pur oses, my invention cons1sts 1n certain nove features of construction and arrangement of parts, which will be hereinafter more fully set forth,- ointed out in the claims, and illustrated in t e accompanyin drawings,in which:

igure 1 is'a front elevation of a machine of my 1m roved construction, parts thereof being bro en away; Fig. 2 is a plan viewof the machine seen in Fig. 1; Fig. 3 is a detail section taken through the center of one of the yielding devices against which the rear face of the 'nut bears when the front face thereof is engaged by the grinding wheel;

:Fig. 4 is a transverse section taken on the line 444 of Fig. 2; Fig. 5 is a detail section opening 4, and extending upwardly over the illustrating a flexible connection in the shaft which carries the nutiholding disk; Fig. 6 is a detail section of one end of a bearing plate I make use of in my machine, against which the rear ends of the yielding devices carried by the nut holding disk enga e.

Referrin ,bynumerals to t e accompan ing drawings :-.1 designates the top or bo y plate of my improved machine, which is su -ported on suitable legs 2, and formedint e rear portion of the center of this top is an o enmg 3, which is occupied b the inding w eel of the machine; and orme in the front ortionof the top and communicating witht e o ening 3 is an opening 4, in which operates t e nut carrying disk. g Located on the top 1, to the left of the 0 ening 4, is a pair of journal boxes 5, inw 'ch.

is arranged for o eration a shaft 6 formed in two sections, an the adjacent ends of the sections, between the boxes 5, being provided with disks 7, in the adjacent faces of which. are formed recesses 8, occupied by stiff coil springs 9, thus providing a yielding joint between the two parts of the shaft 6.

Fixed on the outer end of the shaft 6isa pulley 10, which is driven by a belt 11, and fixed on the o posite end of the shaft 6, and o crating in the opening 4 is a disk 12, in the e go of which is formed a series of rectangular notches 13, of such size as to readily receive the nuts from which the burs are to be removed.

Fixed to the rear face of the disk 12, immediatel to the rear ofleach notch 13, is a tubular ousing 14', and arranged to slide therein, and normally bearin a ainst the rear face of the disk, immedlate y behind each notch 13, is a block 15.

A block 16 is arranged to slide in the rear end of each housing 14, there being an expansive coil sprin 17 arranged between each corresponding pair ofblooks '15 and 16; and integral with each block 16 is a stem 16, which proi'ects through an opening 18 formed in t 1e rear end of each housing 14.

Fixed on the top corner of the openln 4 is the lower end of a segmental bearlng ate 19, the central ortion of the body 0 which is in the 'pat of travel of the outer ends of the stems 16, and the u per forward corner of this bearing plate 1s beveled, as designated by -20.

Fixed to the top 1, atthe rear end of the ont portion of the disk 12, immediately adjacent the notches 13 therein, to prevent the nuts from becoming unseated from the notches before bein carried into en agement with the face 0 the grinding wheel.

Fixed to the to l, to the right of the 0 ening 3, is a air 0 journal boxes 23, in w ich is arrange for o eration a shaft 24; and fixed on the left and end thereof and op- 1, at the rear left hand erating in the opening 3 is a grinding wheel 25, of emery, or analogous material, a portion of the face of which overlaps a portion of the face of the disk 12. vFixed on the shaft 24, between the boxes 23, is a pulley 26, which is driven by a belt 27.

When the machine is in operation, the pulleys 10 and 26 are driven by belts 1] and 27, and rotary motion is imparted to the shafts 6 and 24; and the disk 12 and grinding wheel 25 are driven in the directions indicated by the arrows in Fig. 4, and the speed at which the grinding wheel 25 is traveling being much greater than that of the disk 12.

The operator in front of the machine successively places the nuts in the notches 13 during the time the latter are traveling past the guard 22, with the faces of thenuts having the burs thereon pro'ecting toward the right hand; and, as the 'sk '12 rotates, the nuts positioned in the notches 13-are carried around beneath the guard 21.

The stems 16 of the blocks 16 during their travel successively ride up the inclined .face 20 of the bearin plate 19, and during'their travel upon sai bearing plate, said stems and blocks are forced inwardly for :ashort distance through the housings 14, as shown by dotted lines in Fig. 6, thus com ressing the springs 17 and causing the blocs 215 to bear with considerable pressure against the rear face of the disk 12 and the nuts carried thereby; and during this period of travel of the various parts just described, the face of the rinding wheel 25 is in engagement with the aces of a number of the nuts carried by the disk 12 and the burs thereof-beinglg-round off. The extra pressure is su plie to the blocks 15 in the manner just escribed during the time the nuts are being carried past the grindingwheel, in order that nuts having extra heavy burs will be prevented from being forced inwardly as a result of contact.

with the face of the grinding wheel; and thus all nuts leaving the machine will be uniform I and free from burs. After the nuts are car ried past the face of the grindin wheel and" 'to the lower portion of the dis they will automatically discharge into a suitable rece tacle located beneath the disk. The flexlb e connection between the two sections of the shaft 6 reduces all jar and vibration due to a contact of nuts having heavy burs with the grinding wheels.

A machine of my improved construction posesses superior advantages in. points of simplicity, durability, and general efiiciency, saves much time and labor in removing the burs from nuts, and can be operated with a minimum amount of power.

I claim 1. In a machine of the class described, a frame, a grinding wheel arrari ed for operation thereon, a.disk arrange for rotation ad agent the grinding wheel so that portions of said disk and wheel overlap, there being a plurality of'notches formed in the edge of the disk to receive thenuts that are en aged by the grinding wheel, housin s fixe to the rear side of the disk imme iately opposite the notches therein, a pair of blocks loosel mounted :in-each housing, an ex ansive coil spring arranged in each housing etween the pair of blocks therein, and ,means fixed on the frame fOIxlIlOViIlQiDhG rear series of blocks inwardly during the time the corresponding notches of the disk are moving past the grinding wheel.

2. In a machine of the class described, a

frame, a grinding wheel arran ed'for operation thereon, a disk arranged for, rotation ad acent the grinding wheel so that portions of said disk and wheeloverlap, there being a plurality of notches formed in the edge of the disk to receive the nuts :that are engaged byupward immediately adjacent the notche edge of the disk.

3. In a machine of the class described, a frame, a grinding wheel arranged for rotation thereon, a disk arranged for rotation adjacent the grinding wheel so that portions of said disk and wheel overlap, there being a plurahty of nut receiving notches-formed in the edge of the disk, yielding nut engaging devices arranged on the rear side of the disk immediately opposite the notches therein, and means fixed on the frame for engaging the yielding nut en aging means during the time the correspon ing notches of the disk are moving past the grindi wheel.

4. In a machine of the c ass described, a frame, a grinding wheel arranged for rotation there0n, a disk arranged for rotation adacent the grinding wheelv so that portions of said disk and wheel ov'erlap,-there bein a plurality of nut receiving notches forme in the edge of the disk, yielding nut engafili'nlg immediately adjacent the notched edge of 10 devices arranged on the" rear side of'the the disk. immediately opposite the notches therein, In testimony whereof, I have signed my' .means. fixed on the frame for engaging the name to this specification, in presence of two yielding-nut engaging means duringthe time subscribing witnesses.

the; correspondingnotches of the disk are EDWARD MONGRAIN.

moving past the grindin wheel, and a Witnesses:

curved guard fixed on' the ame in front of EDwARn E; LONGAN, the grinding wheel and extending upward M. P SMITH. 

